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HJ 1209-2021: Technical guidelines of soil and groundwater self-monitoring for industrial enterprises
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Technical guidelines of soil and groundwater self-monitoring for industrial enterprises
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HJ 1209-2021
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Standard similar to HJ 1209-2021 HJ 1217 HJ 1200 HJ 1199 Basic data | Standard ID | HJ 1209-2021 (HJ1209-2021) | | Description (Translated English) | Technical guidelines of soil and groundwater self-monitoring for industrial enterprises | | Sector / Industry | Environmental Protection Industry Standard | | Word Count Estimation | 15,153 | | Issuing agency(ies) | Ministry of Ecology and Environment | HJ 1209-2021: Technical guidelines of soil and groundwater self-monitoring for industrial enterprises
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(Technical Guidelines for the Self-monitoring of Soil and Groundwater in Industrial Enterprises (Trial) (Release Draft))
National Ecological Environment Standard of the People's Republic of China
Self-monitoring of soil and groundwater in industrial enterprises
Technical Guide (Trial)
Technical guidelines of soil and groundwater self-monitoring for
industrial enterprises
This electronic version is the official standard text, which is reviewed and typeset by the Environmental Standards Institute of the Ministry of Ecology and Environment.
Published on 2021-11-13
2022-01-01 Implementation
Released by the Ministry of Ecology and Environment
directory
Foreword...ii
1 Scope...1
2 Normative references...1
3 Terms and Definitions...1
4 General requirements for self-monitoring...2
5 Monitoring plan formulation...2
6 Sample collection, preservation, circulation, preparation and analysis...5
7 Analysis of monitoring results...6
8 Quality assurance and quality control...6
9 Monitoring report preparation...7
10 Monitoring management...7
Appendix A (Informative) List of Recommended Information to Collect...8
Appendix B (informative appendix) List of key monitoring units...9
Appendix C (Informative Appendix) Example of Pollutant Concentration Trend Analysis Method...10
Appendix D (Informative) Reference Format for Self-Monitoring Reports for Soil and Groundwater...11
Technical Guidelines for Self-Monitoring of Soil and Groundwater in Industrial Enterprises (Trial)
1 Scope of application
This standard specifies the general requirements for self-monitoring of soil and groundwater in industrial enterprises, formulation of monitoring plans, sample collection, preservation, circulation,
Preparation and analysis, analysis of monitoring results, quality assurance and quality control, preparation of monitoring reports, basic content and requirements of monitoring management.
This standard is applicable to the self-monitoring of soil and groundwater in industrial enterprises in key soil pollution supervision units. other industrial enterprises
The self-monitoring of soil and groundwater can be implemented with reference to this standard.
For the monitoring of storage sites and landfills in key soil pollution supervision units, if the state has promulgated corresponding technical regulations, such regulations shall be followed.
2 Normative references
This standard refers to the following documents or clauses thereof. For dated references, only the dated version applies to this standard.
For undated references, the latest edition (including all amendments) applies to this standard.
GB 36600 Soil Environmental Quality Construction Land Soil Pollution Risk Control Standard (Trial)
GB/T 14848 Groundwater Quality Standard
GB/T 32722 Soil Quality Guidelines for long-term and short-term preservation of soil samples
HJ 25.2 Technical Guidelines for Construction Land Soil Pollution Risk Control and Restoration Monitoring
HJ 164 Technical Specification for Groundwater Environmental Monitoring
HJ/T 166 Technical Specification for Soil Environment Monitoring
HJ 610 Environmental Impact Assessment Technical Guidelines Groundwater Environment
HJ 964 Environmental Impact Assessment Technical Guidelines Soil Environment (Trial)
HJ 1019 Technical Guidelines for Sampling of Volatile Organic Compounds in Soil and Groundwater
"Guidelines for the Investigation of Potential Soil Pollution in Key Supervision Units (Trial)" (Ministry of Ecology and Environment Announcement No. 1 [2021])
3 Terms and Definitions
The following terms and definitions apply to this standard.
3.1
self-monitoring
In order to grasp the impact of the production process on the soil and groundwater environment, industrial enterprises organize development activities in accordance with relevant laws, regulations and technical specifications.
regular monitoring activities of the exhibition.
3.2
key soil pollution supervision and management entity
The competent department of ecological environment of the local people's government at or above the city level divided into districts shall, in accordance with the provisions of the competent department of ecological environment of the State Council,
Discharge of harmful substances, etc., determine the units included in the list of key soil pollution supervision units in the administrative region.
3.3
key monitoring unit
According to the investigation, the enterprise believes that soil or groundwater pollution may be caused by leakage, loss, scattering, etc., and key sites that need to be monitored.
or key facilities and equipment.
3.4
Contaminants of concern
Substances that are involved in the operation of key sites or key facilities and equipment of the enterprise and may cause soil or groundwater pollution.
3.5
diving phreatic water
Groundwater with a free surface above the first stable aquifer below the surface.
4 General requirements for self-monitoring
4.1 Develop a monitoring plan
Enterprises should conduct data collection, on-site surveys and personnel interviews to investigate all possible contamination of soil or groundwater in the enterprise.
Sites and facilities, identify them as key monitoring units, classify them, and formulate self-monitoring plans. The content of the monitoring program should include at least
Including. monitoring points and layout, monitoring indicators and frequencies, proposed sample collection, preservation, circulation, preparation and analysis methods, quality assurance
certification and quality control.
4.2 Construction and management of monitoring facilities
Enterprises should build and manage groundwater monitoring wells in accordance with the requirements of HJ 164 according to the monitoring points and monitoring indicators determined by the monitoring plan.
Groundwater monitoring wells should be built as long-term monitoring wells.
4.3 Implement the monitoring program
Enterprises should carry out regular monitoring activities on their own or entrust relevant institutions according to their own conditions and capabilities in accordance with the monitoring plan, and report the relevant content.
Included in the annual self-monitoring report of the enterprise and the annual implementation report of the pollutant discharge permit (only for enterprises that have issued a pollutant discharge permit).
4.4 Do a good job in monitoring quality assurance and quality control
Enterprises should establish a self-monitoring quality system, and do a good job in quality assurance and quality control in each link in accordance with the requirements of this standard and related technical specifications.
4.5 Reporting and Disclosure of Monitoring Data
Enterprises shall, in accordance with the requirements of relevant laws and regulations, report monitoring data to the competent department of ecological environment and disclose the monitoring results to the public.
5.Development of monitoring plan
5.1 Key Monitoring Units
5.1.1 Data collection
The data proposed to be collected mainly include basic information of the enterprise, production information, hydrogeological information, ecological environment management information, etc.
See Appendix A for a single list. The relevant information can be increased or decreased according to the actual situation.
5.1.2 Site survey
On-site inspections should be conducted to supplement and confirm the internal information of the enterprise to be monitored, and to verify the validity of the collected data. Control corporate flat cloth
Set up maps, investigate the distribution of various sites and facilities and equipment, and verify their main functions, production processes and the toxic and hazardous substances involved. key point view
Observe the ground hardening or other anti-seepage measures of the site and facilities and equipment, and determine whether there is any soil leakage caused by leakage, loss, scattering, etc.
or groundwater pollution.
5.1.3 Personnel interviews
When necessary, the information of the enterprise can be further supplemented and verified through personnel interviews. The interviewers can include the person in charge of the enterprise, familiar with the production of the enterprise
The managers and employees of the activities, and the staff of the competent departments of the ecological environment, development and reform, industry and informatization of the enterprise are familiar with
Local personnel, relevant industry experts, etc.
5.1.4 Identification and classification of key monitoring units
Analyze, evaluate and summarize the survey results from 5.1.1 to 5.1.3 of this standard, combined with
According to the requirements of relevant technical specifications such as South (Trial)", check the key places and key facilities and equipment with potential soil pollution hazards in the enterprise,
Sites or facilities and equipment that may cause soil or groundwater pollution through leakage, loss, scattering, etc. are identified as key monitoring units.
development of soil and groundwater monitoring.
Key sites or areas with dense distribution of key facilities and equipment can be uniformly divided into one key monitoring unit.
Then the upper area is not more than 6400 m2.
After the key monitoring units are determined, they should be classified according to the principles described in Table 1, and a list of key monitoring units should be filled out.
See Appendix B.
5.2 Monitoring points
5.2.1 Layout principle
5.2.1.1 The layout of monitoring points should follow the principle of not affecting the normal production of the enterprise and not causing potential safety hazards and secondary pollution.
5.2.1.2 The location should be as close as possible to key sites or key facilities and equipment with potential soil pollution hazards in key units.
When the facilities and equipment occupy a large area, they should be as close as possible to the site or the facilities and equipment that are most likely to be subject to leakage, loss, and scattering of pollutants.
Hidden points of path impact.
5.2.1.3 According to the geological prospecting data, if the target sampling layer has no soil that can be extracted or the groundwater burial conditions are not suitable for sampling, it is not necessary to carry out corresponding measures.
Monitoring, but the geological exploration data should be provided and explained in the monitoring report.
5.2.2 Soil monitoring points
a) Location and number of monitoring points
1) A type of unit
In principle, at least one deep soil monitoring point should be arranged around each concealed key facility and equipment involved in the first-class unit.
Or at least one surface soil monitoring point should be arranged around.
2) Class II unit
In principle, at least one surface soil monitoring point should be arranged inside or around each Class II unit. The specific location and number can be determined according to the size of the unit.
The number and distribution of key sites or key facilities and equipment in small units or units should be adjusted appropriately. In principle, monitoring points should be laid on bare soil
Dew areas, and consider setting them in areas where rainwater is easy to confluence and accumulate. Units where the pollution route includes scattering should also be combined with the main pollutants.
The drop position determines the point position.
b) Sampling depth
1) deep soil
The sampling depth of deep soil monitoring points should be slightly lower than the contact surface between the bottom of the corresponding concealed key facilities and equipment and the soil.
Units with groundwater monitoring wells within 50 m downstream and conducting groundwater monitoring in accordance with the requirements of this standard may not have deep soil monitoring
Measuring point.
2) Top soil
The sampling depth of surface soil monitoring points should be 0-0.5 m.
Seamless hardening or other effective anti-seepage measures have been taken on the ground inside the unit and within a range of 20 m around it. If there is no exposed soil, no
Top soil monitoring points shall be arranged, but corresponding image records shall be provided and explained in the monitoring report.
5.2.3 Groundwater monitoring wells
a) Control point
In principle, enterprises should set up at least one groundwater control point.
The control point is arranged at the upstream of the groundwater flow of the enterprise land, and is set in the same aquifer as the pollutant monitoring well, and should try to ensure that no
Self-monitoring of the impact of the production process of the enterprise.
The number of control points can be appropriately increased according to the changes in the flow direction in areas where the groundwater flow direction may change seasonally, such as rivers, lakes and oceans.
quantity.
b) Location and number of monitoring wells
There should not be less than one groundwater monitoring well corresponding to each key unit. In principle, the total number of groundwater monitoring wells (including control points) in each enterprise
There should be no less than 3, and try to avoid them on the same straight line.
The location and location of groundwater monitoring wells corresponding to the unit should be determined according to the number and distribution of key sites or key facilities and equipment in the key unit.
The number of monitoring wells should be arranged in the downstream direction of the pollutant migration path. In principle, the location and number of wells should be able to capture all
Groundwater pollution that may be caused by point sites or key facilities and equipment.
The ground has adopted key sites or key facilities and equipment that meet the relevant anti-seepage technical requirements of HJ 610 and HJ 964.
The number of monitoring wells in the unit, but not less than one monitoring well.
Existing groundwater monitoring wells in the enterprise or adjacent areas, if they meet the screening requirements of this standard and HJ 164, can be used as groundwater
Control points or contaminant monitoring wells.
Monitoring wells should not be changed, and the continuity of groundwater monitoring data should be ensured as much as possible.
c) Sampling depth
Self-monitoring in principle only investigates diving. Enterprises involved in underground water abstraction should consider increasing the monitoring of water abstraction layers.
For the sampling depth, please refer to the relevant requirements of HJ 164 for the water intake position of monitoring wells.
5.3 Monitoring indicators and frequency
5.3.1 Monitoring indicators
a) Initial monitoring
In principle, the monitoring indicators of all soil monitoring points should at least include the basic items in Table 1 of GB 36600, the monitoring indicators of groundwater monitoring wells
At least the routine indicators in Table 1 of GB/T 14848 should be included (except for microbial indicators and radioactive indicators).
Any key unit in the enterprise involving pollutants of concern outside the above-mentioned scope shall be included in the list according to the pollution characteristics of its soil or groundwater.
Initial monitoring indicators for all soil or groundwater monitoring points within the enterprise.
Contaminants of concern generally include.
1) The soil and groundwater characteristic factors determined in the enterprise environmental impact assessment document and its approval;
2) Relevant management regulations such as pollutant discharge permits or pollutant discharge (control) standards implemented by enterprises may cause pollution to soil or groundwater.
Affected pollutant indicators;
3) The raw and auxiliary materials, production process, intermediate and final products in the production process of the enterprise may have an impact on soil or groundwater.
The pollutant indicators or other toxic pollutant indicators included in the list of toxic and harmful pollutants or priority control pollutants;
4) The pollutants produced by the transformation or degradation of the above pollutants in soil or groundwater;
5) Involving characteristic items of corresponding industries in Appendix F of HJ 164 (only for groundwater monitoring).
b) Follow-up monitoring
Follow-up monitoring determines monitoring indicators according to key units. The monitoring indicators corresponding to each key unit should at least include.
1) Any soil monitoring point or groundwater monitoring well corresponding to this key unit has exceeded the standard in the previous monitoring, and the determination of exceeding the standard
Refer to 7 of this standard, the indicators that exceed the standard due to factors such as geological background may not be monitored;
2) All pollutants of concern involved in this key unit.
5.3.2 Monitoring frequency
The minimum monitoring frequency of self-monitoring shall be implemented in accordance with the requirements of Table 2.
5.4 Monitoring plan changes
Except for the following circumstances, the monitoring plan should not be changed at will.
a) Changes in relevant national laws, regulations or standards;
b) Changes in the location, function, production process, etc. of key sites or key facilities and equipment of the enterprise;
c) The enterprise increases the monitoring points, monitoring indicators or monitoring frequency on the original basis.
6 Sample collection, preservation, circulation, preparation and analysis
6.1 Sample Collection
The soil sample collection method was carried out in accordance with the requirements of HJ 25.2, HJ/T 166 and HJ 1019.
Before groundwater sampling, the well should be cleaned, and the cleaning method should be carried out in accordance with the requirements of HJ 164.The groundwater sample collection method is in accordance with HJ 164,
The requirements of HJ 1019 are carried out.
6.2 Sample storage, transfer and preparation
The preservation, circulation and preparation of soil samples are carried out in accordance with the requirements of GB/T 32722, HJ 25.2, HJ/T 166 and the analysis method to be selected.
The preservation and circulation of groundwater samples shall be carried out in accordance with the requirements of HJ 164, HJ 1019 and the proposed analysis method.
6.3 Sample Analysis
The selection of sample analysis methods should fully consider factors such as the nature of pollutants and the detection limit and interference of the analytical methods used.
The monitoring and analysis methods should preferably use the methods specified in the implemented standards. If the standard method of other countries and industries is used, the main method of the method shall be
The characteristic parameters (including the lower limit of measurement, precision, accuracy, interference elimination, etc.) must meet the requirements of relevant standards. No national and industry standards yet
For quasi-analytical methods, other methods can be selected, but method validation and comparative experiments must be done to prove the reliability of the main characteristic parameters of the method.
7 Analysis of monitoring results
The analysis of monitoring results should at least include the following.
a) Concentration of soil pollutants and the screening value of the second type of land in GB 36600, the background value of soil environment or local soil pollution risk control
standard comparison;
b) Groundwater pollutant concentration and the corresponding limit value in GB/T 14848 or the local ecological environment department
The comparison of the background value of the groundwater environment in the area determined;
c) Comparison of the monitoring value of pollutants at each point of groundwater with the previous monitoring value of the point;
d) Trend analysis of monitoring values of pollutants at each point of groundwater (see Appendix C for examples of trend analysis methods);
e) Detection of pollutants of concern in soil or groundwater.
When any of the following situations occurs at a point, the monitoring frequency of the point should be increased by at least 1 times, until at least two consecutive monitoring results are consistent
The original monitoring frequency can be restored only if the following situations no longer occur; except when the pollution may not be caused by the production activities of the enterprise after analysis, but it should be
In the analysis of monitoring results, it is explained together.
a) The concentration of soil pollutants exceeds the screening value of the second type of land use in GB 36600, the background value of soil environment or the local soil pollution risk management
control standard;
b) The concentration of groundwater pollutants exceeds the corresponding limit in GB/T 14848 for the functional zoning of groundwater in the area or the local Ministry of Ecology and Environment
The background value of the groundwater environment in the area determined by the gate;
c) The monitoring value of groundwater pollutants is more than 30% higher than the previous monitoring value of the point;
d) The monitoring value of groundwater pollutants showed an upward trend for more than 4 consecutive times.
8 Quality Assurance and Quality Control
8.1 Establish a quality system
The unit undertaking self-monitoring shall have working conditions suitable for the monitoring tasks, sufficient equipment and technical level to meet the work requirements
technical personnel, and have appropriate measures and procedures to ensure accurate and reliable monitoring results. All or part of the enterprise entrusts relevant institutions to carry out monitoring work
If it does, it should be confirmed that the institution's capacity meets the quality requirements for self-monitoring.
The undertaking unit shall, according to the work needs, sort out the work flow that should be formulated to ensure the quality of the monitoring work in each link of the formulation and implementation of the monitoring plan
procedures, management measures and supervision measures, and establish a self-monitoring quality system.
8.2 Formulation of monitoring plan
Enterprises should evaluate the applicability and accuracy of their monitoring programs by themselves, including but not limited to.
a) Whether the basis for identification and classification of key units is sufficient, and whether a list of key monitoring units and standards have been provided in accordance with the requirements of this standard
The general layout plan of the enterprise with the location of key units and monitoring points/monitoring wells recorded;
b) Whether the location, number and depth of monitoring points/wells meet the requirements of 5.2 of this standard;
c) Whether the monitoring indicators and monitoring frequency meet the requirements of 5.3 of this standard;
d) Whether all monitoring sites have been verified to have sampling conditions.
8.3 Sample collection, preservation, circulation, preparation and analysis
The location, quantity and depth of sample collection should be consistent with the monitoring plan in principle.
For adjustments based on the readings of on-site rapid screening instruments such as heavy metal rapid analyzers or other reasonable basis, the adjustment plan shall be explained in the monitoring report
and provide corresponding evidence.
The quality assurance and quality control of sample collection, preservation, circulation, preparation and analysis should also meet GB/T 32722, HJ 164,
HJ/T 166, HJ 1019 and the requirements of the selected analytical method.
9 Preparation of monitoring report
See Appendix D for the general format of the self-monitoring report for soil and groundwater. The outline and content of the report can be based on the company's self-monitoring
Adjust as appropriate, but at least include.
a) Description of the self-monitoring program implemented by the enterprise (at least covering the list of key monitoring units, marked with key units and monitoring points/monitoring
The general layout of the enterprise for the well location, the description of the identification and classification process of key units, the description of the location, number and depth of monitoring points,
Monitoring indicators and frequencies of each point and description of the reasons for their selection, description of methods of sample collection, preservation, circulation, preparation, etc.);
b) Monitoring results and analysis, the analysis method and detection limit selected for each monitoring indicator should be specified in the report;
c) quality assurance and quality control;
d) The main measures the enterprise intends to take in response to the monitoring results.
10 Monitoring management
The key soil pollution supervision units shall be responsible for the authenticity and accuracy of the monitoring data and information disclosed.
The key soil pollution supervision unit shall cooperate with the supervision and inspection of the competent ecological environment department.
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